I have a small cast iron, gear pump that was working.
The gear is about an inch in diameter, .375 thick and the other gear (idler type) is a bit smaller.
No blockages, no clogs, all looks good. However, there are three set screws/plugs around the periphery of the pump equidistant at 120 degrees.
This thing no longer pumps but tries to do so.
There are no leaks. I did fiddle with the plugs as it was not doing well.
Help, anyone?
Thanks
j/b